The compound that is antiaromatic is (I) (II) (III) (IV)

ABC26OR0030 · General Organic Chemistry

Subject: Organic Chemistry · Chapter: General Organic Chemistry · Topic: Aromaticity · Exam: CSIR-NET DEC 2014 · Marks: 2 · Difficulty: Medium

The compound that is antiaromatic is structure

(I) (II) (III) (IV)

(a)I

(b)II

(c)III

(d)IV

Answer

Answer (as printed): A

Explanation

(I) contains 4n π electrons and also the electrons are delocalized due to the presence of empty p orbital of boron. Thus (I) is antiaromatic.

Explanation as extracted from the printed page; notation may be imperfect.